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1840-1849::1843::02::14 in date 
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From:
Edward Sabine
To:
Sir John Herschel
Date:
[14 February 1843]
Source of text:
RS:HS 15.151
Summary:

Sent JH's letter concerning actinometers to all observatories. [Johann] Lamont must be informed of recent work. ES comparing fluctuations of direction and force at Toronto and Van Diemen's Land. Mentions [G. B.] Airy and air currents.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Charles Babbage
Date:
[14 February 1843]
Source of text:
RS:HS 2.302
Summary:

Regarding the deeds for CB's brother-in-law. Is sorry that CB could not see the blasting of the cliffs at Dover.

Contributor:
John Herschel Project